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Finding the Fourth Proportional to 299,485.20, 449,227.80 and 99,812.10

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Solution

The fourth proportional to 299,485.20, 449,227.80 and 99,812.10 is: 149,718.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,485.20 : 449,227.80 = 99,812.10 : x
  2. Step 2: Convert to fraction form
    299,485.20/449,227.80 = 99,812.10/x
  3. Step 3: Cross multiply
    299,485.20x = 449,227.80 × 99,812.10
  4. Step 4: Simplify right side
    299,485.20x = 44,838,370,096.38
  5. Step 5: Solve for x
    x = 44,838,370,096.38/299,485.20
  6. Step 6: Final answer
    x = 149,718.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.